Here is a collection of links we found to be of interest while researching this topic.

Wikipedia's entry for  Beelzebub's Tales to His Grandson

An online copy of the 1950 version by the Gurdjieff Heritage Society

Gurdjieff’s English Language Writings
- J. Walter Driscoll

Dolmen Meadow Editions
Publication History of G.I. Gurdjieff's Beelzebub’s Tales to His Grandson